overbury



Feb. i0, 1931. A. A. QVERBURY REGISTER Filed Sept. 5, 1929 5 Sheets-5heet 5 07mm: yam (IQ/MM CiuCLMt/rm differ/161W 1931- A. A-. OVERBURY REGISTER Filed Sept. 5, 1929 5 Sheets-Sheet 4 uf WMMW m m am W 6 7 fid w hh Feb. 10, 1931.

A. A. OVERBURY 1,792,391 REGISTER Filed Sept. 5, 1929 5 Sheets-Sheet 5 Patented Feb. 10, 1931 UNITED STATES PATENT OFFICE AUSTIN A. OVERBURY, OF WEST ORANGE, NEW JERSEY, ASTSIGNOR TO MONROE CALCU- LATING MACHINE COMPANY, OF ORANGE, NEW JERSEY, A CORPORATION OF DELA- WARE REGISTER Application filed September 5, 1929. Serial No. 390,598.

The invention has relation to means for clearing out, or setting to zero, the registering wheels of an adding or calculating machine, the invention comprising improved motor driven means for this purpose.

The invention consists inthe novel con- 'struction and combination of parts, as set forth in the appended claims.

In the accompanying drawings, illustrating the invention Figure 1 is a plan View of a calculating machine to which the invention is shown as applied.

Fig. 2 is a plan view of the motor and clearout drive train.

Fig. 3 is a right side elevation of the clearout mechanism.

Fig. 4 is a similar view of the parts hidden in Fig. 3. t

Fig. 5 is a right side elevation of the swinging calculator gear frames and associated parts.

Fig. 6 is a detail face view of the safety latching mechanism.

The invention is shown as applied to well known Monroe calculating machines, but iscapable of use with other registers of widely differing design.

In the drawings, the numeral 1 designates the stationary frame of the machine, and 2 the transversely shiftable carriage whereon the plurality of registers are mounted. As shown, these registers comprise two sets of accumulator wheels 3 and 4, mountedpn parallel shafts and two sets of countlng wheels 5 and 6, mounted on a single shaft, parallel with the shafts of the wheels 3 and 4.

Power for clearing the various registers is derived from the motor 7, (Fig. 2), having drive connection 8 with a shaft 9 whereon a sleeve 10 is mounted, said sleeve having a friction drive connection 11 with shaft 9. Sleeve 10 has gearing connection 12 with a shaft 13 constituting the drive shaft of the clearing mechanism.

A series of clear keys 14 (Fig. 3) is provided, one key for clearing each of the registers 3 and 4, and one key for clearing both registers, 5 and 6. A key 15 is also provided,

whereby all of the registers may be cleared simultaneously.

Each of the keys 14, upon depression, is adapted to impart rearward sliding movement to bars 16, one of the bars being provided for each key. The bars 16 are pivoted to the lower arms of bell cranks 17, the upper arms of whichare contacted by shoulders 18 of the keys. Each of the bars 16 is further provided with a lug 19, which, .in the rearward sliding movement of the bars, will contact with a member 20, common to the lugs 19 and mounted upon a pivoted member 21. Through members 20 and 21, rearward movement of a bar 16 will depress a plunger 22 and will, by means of a pin 26, rock a lever 23, having a roller 24, which will act to close the electric contact members 25 and establish an electric circuit through motor 7. Lever 23 will be held in circuit closing position by means of a spring latch 27.

Downward movement of plunger 22 will also rock an arm 28 out of engaging relation with the clutch arm 29 (Fig. 4) fast with the pivotal clutch member 30. Member 30 is mounted in the driven plate 31 and has the well known cut-away portion through which driving. shaft 13 is adapted to pass. Upon release of part 29 by arm 28, a suitable spring will rotate the clutch element 30 causing said element to enter a semi cylindrical recess of shaft 13, whereby the driven plate 31 will be clutched to the drive shaft. A Geneva gear 32 is fast with plate 31, and upon the engagement of the clutch above described, gear 32 will set in motion a train of gearing 33 to drive a gear 34, mounted upon the shaft 35 of carriage 2. Gear 34 is splined to shaft 35, and is held in fixed relation tothe gear train 33 by means of suitable guideinembers, so that carriage 2 may be shifted laterally without bringing gearing 34 out of mesh with said train. A second gear train 36, in the carriage 2, transmits the movement to gears 37, 38. and 39, fast with the shafts of the registers to be cleared. I

The bars'16 are adapted to set clearing members into active position, whereby one or all of the registers will be set to zero upon with one of a series of clearing fingers 44' fastened upon rock shafts 45, so that upward movement of the plungers will move fingers '44 into the path of movement of pins 46 of the register wheels. The register wheels are frictionally mounted upon their shafts, so that when the pins 46 are brought into contact with fingers 44, the wheels will be held in this position during the balance of the rotation of the register shaft and the character 0 on thewheels will be broughtvbeneath the sight openings of carriage 2.

Each of the bars 16 has a (log 42 adapted to operate the above-described parts related to a given register shaft, whereby the register to be cleared will be selected by means of the appropriate key 14. The key 15, 101 clearing all of the registers by a single key depression, is provided with a bar 48 having a lateral extension 47 engaging all of the lugs 19, to move all of the dogs 42 to operative position. llhe bar 48 is extended rearwardl over pin 41.

At the end of a complete rotation of the above-described parts, the roller of bell lever will drop to the low portion of its cam and allow the bars 16 to fall, restoring the keys tonormal position." Plunger 22 is also released, whereby lever 23 willbe free to be returned to circuit breaking position by means of a pin 49 on gear 32. Release of the plunger 22 will also release arm 28 which will be brought again into contactwith the member 29, whereby clutch element ,30 will be rotated to release the clutch between disk 31 and shaft 13.

' In the-machine illustrated, the differential actuating gears 50 and 51 are connected with the registers 3 and'4 by means of intermediate gears 52 mounted in swinging frames 53 (Fig. 5), these frames being normally latched to hold the gears 52 in active position. When the registers 3 or 4 are to be cleared, it is nec-.

essary to unlatch the frames 53 which will then be swung by means of a spring 54 out of connecting position between the gears 50, 51dandthe related gears of, the registers 3 an 4.

This is accomplished by means of a roller 55 on disc 31, which, upon rotation of said disc will move aIlever 56 having a toggle connection with the latch 57 to move the latch out of contact with the latching. face 58 of one of the frames 53. The frames are connected by a bar. Upon operation of gears 50 and 51, the frames will be relatched in active meager a latch 62 may be provided for the bars 16, as

shown in Fig. 6. Latch 62 is normally held in inoperative position by an arm 63, provided with a pin 64 engagedby the lug 65 of any one of the bars 16, in rearward movement thereof, to release the latch from restrained position. The latch will remain in engagement with tooth 66 of the rearwardlylhoved bar 16 until a pin 67 carried by gear 32 contacts with said latch and moves the same to disengaged position, allowing arm 63 to drop to latch restraining position under the iniiuence of spring '68.

ll claim:

1. Resettingmeans for registers having a plurality of sets of numeral wheels, a power train and a plurality of keys; means common to the keys for energizing said train, and devices individual to the keys for rendering movement of said train operative to clear the numeral wheel set related to the key.

2. Resetting means for registers having a plurality of shafts, numeral wheels mounted thereon, gearing connecting said shafts, a motor and means for connecting the motor to said gearing; a plurality of selectively movable bars, means common to and operable by the movement of any of said bars to establish the motor connection, means operable by said motor for imparting a second movement to said bar, and means selected by the first named movement of a bar and operable bysaid second movement to reset the numeral wfheels of a related'shaft in the rotation there- 0 3. Resetting means for registers having a plurality of'shafts, sets of numeral wheels mounted thereon, normally inactive abutment means for said wheels, gearing connecting said shafts, a motor and motor keys; means common to said keys, for connecting the motor tosaid gearing, and devices individual to the keys for actuating the abutment means of the numeral wheel set related to the key.

Signed at Grange, in the county of Essex and State of New Jersey, this 27th day of August A. D. 1929.

nns'rm A. ovERBunY. ,1 

